Answer this question truthfully
### Question: What are the symptoms of Altitude sickness?
### Response: Symptoms generally associated with mild to moderate altitude sickness include:
Difficulty sleeping Dizziness or light-headedness Fatigue Headache Loss of appetite Nausea or vomiting Rapid pulse (heart rate) Shortness of breath with exertion
Symptoms generally associated with more severe altitude sickness include:
Bluish discoloration of the skin (cyanosis) Chest tightness or congestion Confusion Cough Coughing up blood Decreased consciousness or withdrawal from social interaction Gray or pale complexion Inability to walk in a straight line, or to walk at all Shortness of breath at rest